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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2171) avoid reverse lookups in QuorumCnxManager
Date Mon, 04 May 2015 04:49:06 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14526237#comment-14526237
] 

Hadoop QA commented on ZOOKEEPER-2171:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12730100/ZOOKEEPER-2171.patch
  against trunk revision 1677460.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 17 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 2.0.3) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    -1 core tests.  The patch failed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/2671//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/2671//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/2671//console

This message is automatically generated.

> avoid reverse lookups in QuorumCnxManager
> -----------------------------------------
>
>                 Key: ZOOKEEPER-2171
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2171
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: quorum
>            Reporter: Raul Gutierrez Segales
>            Assignee: Raul Gutierrez Segales
>             Fix For: 3.5.1, 3.6.0
>
>         Attachments: ZOOKEEPER-2171.patch, ZOOKEEPER-2171.patch, ZOOKEEPER-2171.patch,
ZOOKEEPER-2171.patch, ZOOKEEPER-2171.patch, ZOOKEEPER-2171.patch
>
>
> Apparently, ZOOKEEPER-107 (via a quick git-blame look) introduced a bunch of getHostName()
calls in QCM. Besides the overhead, these can cause problems when mixed with failing/mis-configured
DNS servers.
> It would be nice to reduce them, if that doesn't affect operational correctness. 



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